Except in states with less gun ownership it has been proven that there are lower homicide rates, even when Socioeconomic factors are considered

"States with the highest gun-ownership levels (Wyoming, Montana, South Dakota, Arkansas, Arizona, West Virginia, North Dakota, Idaho, Mississippi, and Alabama), meanwhile, had 6.8 times the rate of firearm assaults, 2.8 times the rate of firearm homicides, and twice the rate of overall homicides than states with the lowest gun-ownership levels."

" the study found that states with the lowest rates of firearm ownership (Connecticut, Hawaii, New Jersey, Massachusetts, Rhode Island, New York, California, Florida, Illinois, and Maryland) had significantly lower rates of firearm-related assault and robbery, firearm homicide, and overall homicide."